Device for refacing valve-seats.



R. N ETTER. DEVIOE FOR RBFAOING VALVE SEATS. uruou'mn FILED NOV. 14, 1908.

Y Patented June 8, 1909. 2 sz'mnrssnm i.

, I 0 v m m M E lo l m0 \K%= V/ u m m 8 2 a A 1. P DH 1% APPLICATION FILED NOV. 14

\A III DEVICE FOR REFAGING VALVE S ENTERED ETATEE RAPHAEL NETTER, or NEW earner entree.

MESNE ASSIGNMENTS, TO THE A CORPORATION OF NEW YORK.

DEVICE FOR REFACIN'G VALVE-SEATS.

Application filed. November Specification of Letters Patent.

Patented Serial no. 462,543.

June 8, 1909.

To all whom it may concern:

Be it known that I, RAPHAEL Nn'rTnR, a citizen of the Republic of France, residing at New York city, in the county an tate of New York, have invented certain new and useful Improvements in Devices for Refacing Valve-Seats, of which the following is a full, clear, and exact description.

The invention, subject of this applic is an improvement in devices of the general character described and claimed in an application filed by Harry S. Clark and mysel on August 10, 1907, Serial No. 387,976, and

consisting of an instrument for refacing the valve seats of power pumps and similar devices, and which is adapted to be introduced into the pump casing and mounted for operation upon the valve seats, e latter, when worn, may be refaced or true up without removal from the pump, or the dismemberment of the pump itself.

The invention the construction of such devices by means of which a greater economy of operation, a

2 wider range of usefulness, and a more perfeet working of the apparatus are secure but as these improvements reside largely in details of construction they may e most readily understood from the following description with its references to the drawings.

in these latter, Figure 1 is a view in side elevation of my improved refacing device shown as applied to a valve seat. Fig. 2 is a plan view of the under side of the device with the central supporting stem or spindle in section. ig. 3 is a central vertical section of the same as shown in Fig. 1. 'Fig. 1 is a horizontal sectional plan view on line .11 of Fig. 3. Fig. 5 is a top plan view of the central portion of the instrument. Fig. (3 is a view in elevation of the supporting stem detached from the device. Fig. is a sectional. detail of a cutting tool and means for supporting the same. Fig. 8 is a view in elevation of a gage for adjusting the cut of the tool.

Corresponding parts in the several figures are designated. by the same numerals.

It may be stated, before proceeding to a description of the improvement, that in the operation of power pumps it becomes necessary at intervals, more or less frequent according to the extent and nature of their resides in improvements in v 1 use, to reface the pose it has been ear I to remove pump chambers,

valve seats, for which purheretofore generally necesthe casing or sides of the as it is difficult if not impossible to detach and replace the valve seats by working through the usual handholes which are provi led in the casing to afford access to the interior of the pump. 11 ordinary pump construction a stem is screwed centrally into each valve seat, to serve as a support and guide for the valve, and in practicing this invention, these stems are removed by an suita le tool introduced through the hand holes, and the stem for g d refacing device inserted in each valve seat successively. The device when thus applied to a valve seat is operated by any suitable motor to effect the proper refacing of the seat.

The stem 1' for supporting the instrument which I employ is shown in Fig. 6 as at its lower end with a threaded portion by means of which it is screwed into the central socket of a valve seat 2, after the valve stem has been removed therefrom. Upon this stem the refacing device is mounted, and while the detailed construction of these devices may-be very greatly varied, their most practical embodiment, so far as now known to me, is that illustrated in the drawings. Referring now to Figs. 1 and 3, the numeral 3 designates a disk or plate to the upper face of which is secure a bevel gear plate 1, and to the under side of which are secured the cutters and their appurtenances. Secured also to the plate 3 is a casting 13 (see Figs. 8 and 4:), forming a chamber immediately above the bevel gear plate 1, in which are located the wheels 14;, 15 and 16, of a planetary gear system, the said wheel 16 surrounding the stem 1. e spindles of the gear 14: and 15, extend through the plates 1 and 3 and carry worm wheels 17 18 engaging with corresponding pinions 19, 20, that are mounted on threaded shafts 21 and 22, passing through and in threaded engagement with the blocks or carriages 23, 2 1 that carry the cutters 25, 26, and slide in guides 27, 28 attached to the under side of plate 3.

The casting 13, secured to and supporting all of the elements above enumerated, has a sleeve or tubular extension 13 surrounding the stem 1, which sleeve is free to turn about tools thereby caused to travel around the the said stem and is rotatably connected stem 1. This rotation of the plate 3 and its with or virtually suspended from the fixed attached parts, imparts a rotary movement. or non-rotating portion of the instrument; to the screw shafts 21, 22, and hence a slow -rotating portion constitutes in longitudinal movement thereon of the oclrs or carriages 23, 24:, through the system of planetary gears, the wheel 16 of keyed to the fixed stem 1, so that 25, 26, describe a spiral path over tie valve seat and true the same to a perfectly level surface connected parts more in detail.

iii-rounding the casting l3 and over the gear chamber which normally turns freely ing l3, but which may be held in fixed rela- .ro meet the requirements of practical tion to the stem 1 in any horizontal angular operation in the general use of the instruposition by the engagement of a springiiient, have devised certain attachments actuated bolt 30 carried in a suitable socket, and details of construction which will now with any one of a series of recesses 31 in a e described. In the first place it is desirsleeve 32, attached to the casting or ring 29 and hence fixed with reference to the stem 1. he casing 12 is formed or provided with a e, in order that the construction of diferent sizes of the device for valve seats of different diameters may be avoided, as far a iori'zontal bearing or journal 12 for a as possible, that provision be made for subsleeve 11 having an extension ll atlordin stituting in the same instrument plates 3 of a bearing for a spindle 9 containing asocket various diameters, carrying cutters of coror other equivalent means for the attachresponding range of radial feed. To this ment of a driving shaft 10. The spindle 9 end the plate 3 is secured to the casting .13 carries a bevel gear wheel 8, meshing with )y screws 3%, access to which for purpose a bevel gear Wheel 7, on one end of a short of insertion or removal is all'orded through shaft or spindle 6 passing sleeve 11, and carrying a second bevel gear 5, beyond which the end of nds a earing in the casing 12.

5 meshes With the bevel gearing is prowhich is noran opening I 35 The worm in the casing 12, mally closed by a screw plug wheels l7, 18 are also made readily dctach able from their spindles, which through the plates 3 and 2t, as y means of locking screws 36. Again, as the instrument is intended for use inside a pump casing, and in general, under conditions where its adjustment an operation cannot be readily observed, he the following provision for throwing the cutters out of gear, when Tie gear wheel gear 4 Whei scribed, and constituting the main features of improvement characterizing the apparaby the reversal of the motor they are brought tus e operation of the same will be briefly fully up to their initial position close to the 40 described. stem 1.

ssuniing the instrument to have been as- The stem 1 is hollow, and through it exseinbled With its parts in the relation shown, tends a stem or plunger 37, having a head and introduced into a ump casing through one of the hand holes, the stem 1 is then inserted in tl place of the valve stem and a from any passed in through the hand hole and connected with th then turned to most 38, and carrying a crosspiece 40 extending through a slot in the stem .1 and serving as a key to couple the gear wheel to to the stem 1. Between the plunger 37 and the stem 1 is a. spiral spring 35) in an enlargement of the bore of the former, one end of which is connected to the head 38, and the "161 to the stem 1. his spring exerts a endency to raise the plunger and to turn it in a predetermined direction. Normally, therefore the plunger would be held in its and the key l0 lifted out of raised position engagement with the gear wheel 16, were it by the engagement of proper recess or indenhe sleeve 11 is then e angu ar position most convenient for not for the device illustrated in Fig. (3. This operation and fixed in suc position by consists of a stud or projection ell on the clamping screws 33. The plate 3 is then plunger 37, which projects thrmigh a slot: 42 adjusted vertically, y means to be dein the stem 1. n one side of the slot: and

scribed, to secure the proper depth of cut of near the lower end thereof is a shoulder with the tools 25, 26, and the latter are set in powhich the stud -fl-1 engages when the plunger sition close to the stem 1. The motor bein 37 is depressed. The spring 39 imparts a then started in operation, the rotation of it; shaft is imparted through the system of bevel gears to the plate 3, and the cutting rotary tendency to the plunger 37 that maintains this engagement when once made.

vVhen the cutters are fed in toward the pass freel v ltltl and throw said stud out of engagement wit its shoulder, as indicated by the arrow in ternally thre Fig. 6. The force of the spring 39 will inscrewed dow stantlylift the plunger 37 and withdraw the threaded partkey 40 from the gear wheel 16, so that the end this rin latter is free to rotate and no further feed shoulder, an movement will be imparted to the cutters annular ca until: the plunger is again depressed and the by stud 41 brought into engagement with its extending flang shoulder. This latter-operation is effected gage wi by hand when the motor is ready to be upper en started in the direction for operating the The cap 56 a cutters. ally one pie To facilitate the insertion, removal and the stem 1, adjustment of the cutting tools the followring 32 ing devices are used: Guides are provided united =as-1 for the tool carriages consisting of plates 43, gage '28, 4A and 27 secured to the underside of the cap plate 3. One of each pair these bloc s as above explained. duced in the ring set screws 63.

a cutter 1S inserted, and these latter are a fixed re clamped in position by blocks L7, I (see Fig. the rings 3' A recess is formed in each block in which by '2), held against the carriages by screwsAlS. 58 of ring 'By loosening screws 45, tightening up vertical saw cut screws 4:6 slightly, and then tightening over the upp screws 45, the inner edge of the plate T3 will leaves an annu be thrown slightly forward to prevent or ed'on itsi take up any lost motion of the tool carriage a washer due to wear or other cause. vided wit It being essential to theproper operation on the o of the instrument that all play or lost motion configuration 0 of the rotary parts carrying the cutters 5G. Said shouldbe avoide'c, while at the same time two diame shown. Over this threaded portion an in- 6 ternally threaded ring or washer is screwed tight against the said shoulder. The ring or casting29 is reamed out to form an annular space or chamber around the upper end of the sleeve 13, and the upper. portion 6 of the ring is threaded both inside and out.

on of the ann leeve 13 an hreaded to e 11 over the uppe of the ring 32 has an i (r 53, having a threaded in d of the stem 53 thus become virtuded engagement with le with res and the ring one piece by h each other. 56, therefore, of these plates the instrument secur as 27 or 28, is attached to the plate 3 by lowered on ste1 ed thereto are The adjustme owever, it is neces- 9 should not turn e instrument is in desirable that they the adjustment reth two inwardly exith vertical grooves f stem 1 is intro- 32 and clam In order to fter adjust and the stem Fig. 5) is pr (30 and is screw end of a the s lar recess in th ll and into t internally h a saw out 59, an

screws 45 and carries one or more set screws cut is thus effected. As, h at along its outer edge, the ends of which sary bear against the under surface of plate 3. about the so The tool carriages or slides are blocks of operation, steel 23, 24, with dove-tail portions contained should not within the grooves of corresponding shape ferred to, EtYW formed by the said plates. The threaded tending lu extensions of the shafts 21, 22, pass through 62 in the threa and since it is do so during asher W1 f the inner su furthermore,

osite saw on 5 is screwe 58 on stem 3 56 against ring 32, between said ring hen the wa trically opp 50 ready means for vertically adjusting such hen the wasl parts should be at hand,1 have devised the contracts following devices for effecting these purpands the annu oses. and effects a firm The upper portion of the vertical or sleeveand the stem 1 5 like portion lif of the casting 18 is reduced loosened, the cap in external diameter, leaving a shoulder imor lowering ring mediately above which the said sleeve, for but not rotating a short distance, is externally threaded, as ment of washer The num prising the in consideration of the de sary in th results of course float-ions of the 32 and its a them because of the engage- 52 with stem 1.

struinent wi of the purpose ular space bed by latter a washer ngage with the ted and occupies the remaind annular c fore referre its lower end and r externally At its upper nternal flange or ing is an 0 which is secured n upwardly side to end to, is mds on the cot to the which latter are their threaded enturning the nd all parts 0' raised or t of the ped thereto as further secure ment between 1, the flange ovided with down This 56, threadhis is inserted (led and prod slightly tapered n to a similar rface of the cap provided with d home it 1, and ex- 55 1s ising ttached parts,

bed as comll be seen, upon a and function to be necesbut the same ght be obtained by inodiform illustrated.

] parting rotation to the carrier, and means constructlon described the rln s 29 and 2, carried by the carrier and dependent for with reference to which the castin l3 and operation on the rotation thereof for shift its attached parts are free to turn, are not ing or feeding the cutting tool horizontally, on y securely fixed to the stem 1, but are as set forth.

capable of bein raivn up tightly against In an instrument for refacing the val ve 1e Washer 50 which may be regarded as inseats of pumps and similar devices, the combination with a stem or spindle adapted for xed attachment to a valve seat, of a part rotatable thereon, and a part adapted to be all lost motion or tWo elements, the fixed of the device, prevented.

these an rotary portions In order that the cap 56, when turned to fixedly secured thereto and serving as a base, any desired position may be temporarily sea cutting tool carried by the rotating part, cured to the ring 32, a spring latch 63 gearingintermediate to the base and rotating pivoted to ring 32 by one of the set screws part for imparting rotation to said rotating and adapted to part, and gears carried by the rotating part in the edge of the cap 56, may

shiftas set 4. In an instrument for refacing the valve Set over a valve seat inside 0 a pump This seats of pumps and similar devices, the comdeviee consists of a block or m tal 65 h vin bination with a stem or spindle adapted for L glOOVe 66 t0 adapt it to be placed over the fixed attachment to a valve seat, of a part edge of the plate 3 and secured thereto b a constituting a base, and a tool carrier roset crew 67 I r nn v ti ll i th tatably connected to and supported thereby, block is a stem with a foot 68 that, ma means for fixedly securing the base to the stem, means for simultaneously adjusting the ase and the rotating tool carrier vertically With respect to said stem, and gearing intermediate to the base and carrier for a set screw 69. is applied to the atter lowered by turnlng the cap 56 until the foot 68 rests on the face of the valve seat. ing he la ter. h gage i t en removed d th Cap 56 o. 11 an instrument for retaeing the valve turned through a known an l to secure th seats of pumps and similar devices, the comdesued depth of cut. bination with a stem or spindle adapted for It is obvious that the device as illustrated fixed attachment to a valve seat, of a tool may b difi in many particulars i h carrier rotatably mounted on said stein, a out eparture fr th Invention I h casting detachably secured to the stem, an f x l shown t tt b t it 1 intermediate sleeve supporting the tool earohvlous th t one f th may b itt d rier and rotatable around the stem, gearing and the device modified accordin ly, Th carried thereb 7 by means of which rotation is imparted to the carrier, and means for gest themselves readily to a skilled m h i uniting the rotatable sleeve to the fixed castvj th d ih d my i ti h t. ing and taking up lost motion between the c aim is: same, as set forth.

1. An instrument for refacing the valve nan instrument of the kind described,

seats of pumps and similar dev e 9%} the combination with a stem or spindle prising in combination a ste s i dl adapted for fixed attachment to a valve seat, adapted for fixed attachment to a valv s at, 0 a part constituting a base adapted to be fixedly secured to the stem, a rotating tool carrier, a horizontally adjustable part intermediate to the base and tool carrier, means for maintaining the base and intermediate part in close ei'igagement, gearing carried l by the intermediate part for imparting rotarotation thereof, for shifting the position of rrier, and a Coupling for the Cutting too so that it describes a spiral Sal gearing capable of angular adjustment, path over the face of the valve seat. as and for the purpose set forth.

refacing the valve 7. In an instrument of the hind described, Seats of pumps and similar devices, c01nthe combination with a stem or spindle, i a stem or spindle adapted for fixed attachment to a valve seat, adapted for fixed attachment to a valve of a partsupported on and adapted to be carrier mounted and capable xedly secured to the stem and constituting djustment thereon, a cutting a base, a tool carrier, an intermediate part tool supported by 'd carrier, a base adaptrotatably suspended from the base and suped to be fixedly but detachably secured to porting the tool carrier,- means for locking the stem, gearing carried thereby for iInthe said lntermediate part to the base in a cut- 1 supported by adapted to be fixedly secured to the stem, gearing carried thereby for imparting rotation to the carrier, and means carried by the operation on the E li lee

'llO

and gearing on said intermediate part for various positions of horizontal adjustment; erate the rod to release the key, and a device i normally maintaining the rod and key in imparting rotation to the tool carrier, as locking position, said device being in posiset forth. i ti'onto be engaged and released by the tool 8. In an instrument of the kind described, slide at a predetermined point in the latters the combination with a stem adapted for line of traveltoward the supporting stem; fixed attachment to a 'valveseat, of a part as set. forth. adapted to be fixedly secured to the stem and 13. "In an instrument of the kind described, constituting a fixed base, a tool carrier rothe combination with a fixed supporting tatably supported on the base, means for stem, a tool carrier rotatable thereon, and a taking up lost motion between the base and bevel gear mounted on the carrier; 0 a tool carrier to maintain the same in close member rotatably adjustable about the supengagement, and gearing on the base enporting stem, means for securing the said gaging with a gear on the tool carrier for member in adjusted position, a driving bevel imparting rotation to said carrier, as set gear journaled in said member and meshing forth. with the first mentioned bevel gear, a device 9. In an instrument of the kind described, rotatably adjustable about the axis of the the combination with a stem adapted for driving bevel gear, means for securing said fixed attachment to a valve seat, of a base device in adjusted position, and means secured to the stem, a rotating carrier, a carried by said device for transmitting cutting tool carried thereby, gearing for power from a motor-driven shaft to the drivimparting rotation to the carrier and shi ting bevel gear; as set forth. ing the tool horizontally, means for connect- 14. In an instrument of the kind described,

ing said gears in operative relation, and a stop movable horizontally with the cutting the combination with a fixed supporting steam, a tool carrier rotatable thereon, an a tool, adapted to encounter means at a given bevel gear mounted on the carrier; 0 a point in its travel for throwing said gears member rotatably adjustable about the stem, out of operative relation, as set fort l a shaft extending radially with respect to 10. In an instrument of the kind desaid bevel gear, a supporting device roscribed, the combination with a non-rotating tatably adjustable about said shaft, a bevel supporting stem, a carrier rotatable thereon, gear journaled in said device, a bevel gear and means for rotating the carrier, of a too on said shaft and in mesh with the last menslide mounted on said carrier and capable tioned bevel gear, a bevel gear on said shaft of radial movement thereon; mechanism for and in mesh with the bevel gear on the tool actuating said tool slide, including a driving carrier, and means for connecting a powergear on said stem; a movable key for lockdriven shaft to the bevel gear journaled in ing the gear to the stem, and means, actuated the said supporting device; as set forth. by the tool slide when retracted to a pre- 15. In an instrument of the kind described, determined inner position, for releasing the the combination of a fixed supporting key and freeing the gear from its nonstem, a rotatable tool carrier axially adjustrotating connection with the stem; as set able thereon, means for securing the carrier forth. 7 in adjusted position, a member rotatably ad- 11. In an instrument of the kind de- 'ustable about said stem, means for locking scribed, the combination with a fixed supsaid member in adjusted position, and drivporting stem, a carrier rotatable thereon, ing mechanism carried by the said member and means for rotating the carrier; 0 a tool for rotating the tool carrier; as set orth slide mounted on the carrier, a non-rotating 16. In an instrument of the kind described, gear on the supporting stem, a planetary the combination wit a fixed supporting gear journaled in the rotatable carrier an stem, of a chambered member having a tu umeshing with the non-rotating gear, a screw lar neck encircling the stem and adjustable shaft working in the tool slide to shift the axially thereon, a tool carrier connected to same radially of the carrier, and means conand supported y the chambered portion of necting the planetary gear with the screw said member, a removable ring or washer on shaft to rotate the latter; as set forth. said tubular neck, an axially adjustable mem- 12. In an instrument of the kind describe ber surrounding the stem and having a the combination with a fixed supporting flange extending under the ring or washer, stem, a carrier rotatable thereon, a tool slide movable radially on the carrier, and means and means for securing the flanged member for shifting the tool slide, said means includin adjusted position on the stem; as set orth. 17 In an instrument of the kind described, ing a driving gear on the stem, and a planetary gear meshing therewith; o a movable the combination with a fixed supporting key for locking said driving gear to the stem, of a chambered member having a tubustem, a rod slidably mounted in the stem to lar neck encircling the stem and axially adjustable thereon, means for securing sai shift the key, yielding means tending to opmember in adjusted position but permitting rotation thereof, a tool carrier fixed to the carrier and the chambered member about the chambered portion of said member, a gear supporting stem; as set forth.

in fixed relation to the stem inside the cham- In testimony whereof I aflix my signat urc er of said member, a planetary gear within in the presence of two subscribing witnesses. 5 the chamber and in mesh with the fixed gear, RAPHAEL N TT R Witnesses M. LAWSON DYER,

. DUNI-IAM.

ated by the planetary gear for shifting the 

